Caterpillar is asking workers at its Canadian plant to accept a large cut in wages and benefits. Wages and benefits at Caterpillar's rail equipment plant in LaGrange, Illinois, are less than 50% of the costs at the Caterpillar locomotive assembly plant in London, Ontario. According to the U.S. Bureau of Labor Statistics U.S. manufacturing labor costs per unit of output were 13% lower in 2010 than in 2000. This compares with an increase of 2.3% in Germany, increase of 18% in Canada, and increase of 15% in South Korea. Caterpillar is also asking for more flexible work rules at the Canadian plant. The flip side of this is that U.S. workers are earning significantly less in manufacturing, especially considering inflation, and the middle class is shrinking in the U.S. At the same time wages in the U.S. that are more competitive with wages in Mexico and China with flexible work rules and use of automation and technology, is helping to reverse the shrinking of the manufacturing sector in the U.S....